Conduit for electric wires



(No Model.)

B-. BUYER GONDUIT P03 ELECTRIC WIRES.

No. 269,379. Patented De0.19 1882.

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- ATTORNEYS N. PETERS. PhotoLhhagraphw, Wahington. [IC- UNITED STATES PATENT OFFICE.

BASSLER BUYER, OF LEBANON, PENNSYLVANIA.

CONDUIT FOR ELECTRIC WIRES.

SPECIFICATION forming part of Letters Patent No. 269,379, dated December 19, 1882.

Application filed February 16, 1882.

.To all whom it may concern:

Be it known that I, BASSLER BoYEn, a citizen of the United States, and a resident of Lebanon, in the county of Lebanon, and State of Pennsylvania, have invented a new and valuable Improvement in Conduits for Electric Wires; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation ofthe same, reference beinghad to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

Figure l is a horizontal longitudinal sectional View of my device. Fig. 2 is a plan view. Fig. 3 is an inside elevation of one part of one of the sections of the conduit. Fig. 4 is a vertical cross-sectional view, and Fig. 5is an inside elevation of the other part of a section of the conduits.

This invention relates to conduits for electric wires; and it consists in the novel construction of the sectional grooved and notched blocks or supports cast of the slag of blast-furnaces, substantially as hereinafter described and claimed. 1

The object of this invention is mainly to supply continuous insulators for long lines of electric conductors, whether under ground or on the surfaceas. for instance,in layingtelegraph, telephone,or electric-light wires or electric railways.

In the accompanying drawings, the letters a a indicate the two parts or sections of the insulating-block B, which forms one of thesections or portions of an insulating-line, consisting of a series of blocks joined end to end, usually by means of the end sockets, b, and end tongues, c.

The sections of each block B are formed in molds, the melted slag from the blast-furnace being poured into the molds and removed therefrom anda-nnealed. The sectionsor blocks thus formed are designed to have grooves, channels, or seats (I, ofany desired size or depth, or of different depths, on their inner faces, or on thefaces c of the sections,which are fitted together in forming the entire or inclosing block. If necessary, holding channels or seats for the wires or other conductorscan beformed on any or all of the outer faces of a block. The blocks are made in two parts, a a, the part a being (N0 model.)

other end a tongue, 0, of a form designed tofit.

the end recess of the next block, is made and provided with notches 00, also in line with the grooves (Z of the parts a a. The blocksB are placed end to end, and are laid upon their edges to form a continuous line. The entire line is not made of the blocks B, as they are only necessary at the points where the wires are to be taken out of the conduits. The other sections therefore need not have the notches b and 00. Vertical grooves 11 are also made in the faces e of the parts a a and intersect the grooves cl, as shown. The upper flange, g, of the part a is also notched, as at (1 to permit the wires to be taken out at these points when it is desired to run them in avertical direction, as to the top of a building.

In order to render the receptacle water-tight the sections can be cemented together, and this should be done in such a manner that the sections can be easily separated if it should be necessary to examine the conductor or conductors atany point.

The blocks or receivers can be laid deep in the ground or near or upon the surface, the slag of which they are formed being an excellent non-conductor of heat as well as of electricity.

When several wires are run through the same line of non-conductors the groovesorchaunels may vary in depth so that the wires can readily pass each other when deflected in the bendsor curves m of the grooves to be carried away from the main line. At the points where the deflected wire crosses the other wiresit should be carefully insulated therefrom. In this manner each conductor is perfectly insulated, and no danger need be apprehended from the approximation of the wires of a dynamo-electric machine-such as are used in electric-light circuits-to the ordinary battery-wires of a telegraphic of telephonic line.

These receivers may bejoined end to end in vertical lines-as, for instance, when extended upward in a building.

It will be noticed that the wires may be taken out laterally from either sideof theblock, and that one, two, or all of them may be taken out. if desired. 7

Having described this invention, what I claim, and desire to secure by Letters Patent, 1s-

1. In a conduitfor electric Wires, a separable block, 13, consisting of the parts a a, having the tongues 0, provided with notches .17, connecting with the grooves d, the other end having the notches b, registering with grooves 11,, substantially as and for the purposes set forth.

2. In a conduit and insulator for electric wires, a separable block, 13, consisting of the parts a a, cast of the slag ot' a blast-furnace and having the longitudinal grooves d of va- BASSLER BUYER.

\Nitnesses:

LEWIS REHR, W. B. ELM, JOHN HENRY HUBER.

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